HttpClient4.x调用指定证书访问https

package com.lala.http;

import java.io.FileInputStream;
import java.io.InputStream;
import java.security.KeyStore;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManagerFactory;

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class Http 
{
	public static SSLContext getSSLContext() throws Exception
	{
		KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
		InputStream input = new FileInputStream("d:/tmp/trust2.jks");
		ks.load(input, "123456".toCharArray());
		
		TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
		tmf.init(ks);
		
		SSLContext context = SSLContext.getInstance("TLSv1.2");
		//这里只指定了受信任的证书（单向认证），如果是双向认证的话，则第一个参数不能为null
		context.init(null, tmf.getTrustManagers(), null);
		return context;
	}
	public static void main(String[] args) throws Exception
	{
		HttpClientBuilder builder = HttpClients.custom();
		builder.setSSLContext(getSSLContext());
		
		CloseableHttpClient httpclient = builder.build();
		HttpGet httpget = new HttpGet("https://127.0.0.1:4488");
		CloseableHttpResponse response = httpclient.execute(httpget);
		
		HttpEntity entity = response.getEntity();
		String body = EntityUtils.toString(entity);
		System.out.println(body);
		response.close();
		httpclient.close();
	}
}